This was a paper compiled by Man of Letters James Haggerty. It provided information on how to remove angelic grace from a previous vessel possessed by an angel.
Description[]
It was akin to a file folder containing compilation of notes and images from different sources rather than an actual book written in a uniform manner. It was considered a classified document.
Contents[]
Its contents were rather detailed as it also provided graphic information on the materials to use, specifically, the syringe needed to aspirate angelic grace from the vessel.